# Installation
1. Browse to the folder location of the EarthCache Add-in file (\*.esriAddInX) that you downloaded on your computer.
2. Double-click the file to open the Esri ArcGIS Add-In Installation Utility window.
3. To continue, click Install Add-In. The Add-In is copied to the default location and installed. A copy of the file remains in the location where you browsed to it.
4. If ArcGIS Pro is open, exit and restart the application. The Add-In is now available for use.
### Download WebView2 if using Add-In for ArcGIS Pro 2.9
If the Add-In is being installed for ArcGIS Pro 2.9, a download of WebView2 is required. You will see a message when logging in for the first time to download WebView2. Visit the URL to start the download, or click [here ](https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/03e33965-9ac7-458c-b6bc-c48177736a31/MicrosoftEdgeWebview2Setup.exe)to download WebView2. Note: Visiting this URL will immediately start download in your browser. If you're unable to download WebView2, see [instructions ](https://skywatch-arcgis.geomarvel.cloud/setup/pages/86SE0qJTMn97CXmALeiI#arcgis-pro-2.9-note)on how to get around this requirement.
For Technical Support, contact [support@skywatch.com](mailto:support@skywatch.com)
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